Method of making shoe-nails



(Model) Patented Apr. 4,1882.

- WITNESSES:

ATTORNEYS.

N. PETERS. mmmm n mr. Washhlglcn. D. C.

' UNITED STATES PATENT OFFICE.

JOHN HYSLOP, JR, OF ABINGTON, MASSACHUSETTS.

METHOD OF MAKING SHOE-NAILS.

SPECIFICATION forming part of Letters Patent No. 255,997, dated April 4,1882.

- Application filed February 17, 1881. (Specimens) To all whom it mayconcern:

Be it known that I, JOHN HYSLOP, Jr., of Abington, in the county ofPlymouth and State of Massachusetts, have invented a new Improvement inthe Method of Making Shoe- Nails, of which the following is a full,clear, and exact description.

Figure 1 is a side elevation of one of my improved nails. Fig. 2 is aside elevation of the same clinched. Fig. 3 is a cross-section of thesame, taken through the line a: 00, Figs. 1 and 2. Fig.4c is aplate fromwhich the nail-blanks are cut. Fig. 5 is a section of the dies by whichthe nails are formed.

The object of this invention is to furnish nails for fastening the solesof boots and shoes and other purposes, that will curve back inclinching, and that can be made lighter than nails made in the ordinarymanner.

The invention consists in forming nails with a uniform taper upon allsides from blanks cut from sheet metal and upset edgewise with dies, aswill be hereinafter fully described.

In making my improved nails they are cut from a strip, A, of sheetmetal, of such a thickness as it is desired the points should have, andof a breadth equal to the required length of the nails.

The blanks B are cut'from the strip A with their heads and pointsalternately in. opposite directions,inthe ordinary manner. Theblanks Bare cut with their points of a width equal to the thickness of the plateA, and with the head end of such a width as will furnish sutficientmetal to givethe desired size and taper to the nails 0. The blanks B arepressed or upset by dies D, into which they are fed in such a mannerthat the pressure will be applied to the blanks edgewise.

The dies D are so formed as to grasp the blank B from its head to, ornearly to, the point and give the nail a uniform taper from head topoint.

The nails 0 can be made with or without heads, and the heads, when used,can be made of any desired shape.

The dies D are made with a tapering cavity, of which one-halt is in eachdie. The blankis pressed breadthwisc between the dies and in thetapering cavity or score, so that the width gradually decreases, whilethe thickness increases until the cavity or score is filled. The pointis so thin as to receive but little pressure-just enough to round thecorners. The nails 0 are designed to be made and the dies 1) used in anordinary nail or tack machine. In making nails in the ordinary way theyare cut from a plate ofthethickness that the body at the head isdesigned to have, and the nails, when formed, are straight upon twosides and tapered upon two side so that they can bend only in twodirections,and when driven against theiron bottom of a last or otherobstruction are liable to bend to one side and pass along the surface ofthe obstruction at right angles with the bodies of the nails, forming aclinch of very little strength. To obviate these objections I make aconical nail by cutting from sheets of metal a wedge-shaped blanktapering equally from one end to the other, and then round it bystriking it up edgewise in dies. My improved nails. when driven againstthe iron bottom of a last or other obstruction, curve back uponthemselves through the material, as indicated in Fig. 2, forming aclinch of great strength. The nails 0, being made with a uniform taper,will not work forward when made without heads or when the heads haveworn off, thus forming a secure and reliable fastening.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The process of forming a shoe-nail from a wedge-shaped blank, whichconsists in compressing the metal along the whole length of the oppositeedges toward the center and corn densing it until the body below thehead is cylindrical in cross-section, of a continuous taper, and adaptedto clinch properly, no matter in what direction the point is turned, asset forth.

JOHN HYSLOP, JR.

Witnesses:

NATHL. P. CARVER, OSCAR RUMsEY.

